66 entries under clandestine topic. ×

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incognito(secret, hidden, spy, underground)
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inside(secret, private, underground, undisclosed)
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mysterious(obscure, private, reticent, unknown)
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mystic(obscure, unknown, underground, undisclosed)
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mystical(obscure, unknown, underground, undisclosed)
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obscure(unknown, underground, undisclosed, unrevealed)
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occult(obscure, unknown, underground, undisclosed)
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out-of-the-way(obscure, unknown, underground, undisclosed)
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recondite(obscure, unknown, underground, undisclosed)
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restricted(private, underground, undisclosed, confidential)
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retired(obscure, unknown, underground, undisclosed)
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secluded(obscure, unknown, underground, undisclosed)
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sneak(underground, undisclosed)
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strange(obscure, unknown, underground, undisclosed)
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top-secret(underground, undisclosed)
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top secret(expression, sensitive, private, underground)
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unacknowledged(sensitive, underground, undisclosed, sub-rosa)
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under false pretense(expression, idiom, sensitive, underground)
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undisclosed(obscure, unknown, underground, unrevealed)
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unenlightened(obscure, unknown, underground, undisclosed)
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APASmart Define. (2011). on the qt thesaurus. Retrieved October 1, 2026, from https://smartdefine.org/on_the_qt/thesaurus/synonyms
ChicagoSmart Define. 2011. "on the qt thesaurus" https://smartdefine.org/on_the_qt/thesaurus/synonyms (accessed October 1, 2026).
HarvardSmart Define 2011, on the qt thesaurus, Smart Define, viewed 1 October, 2026, <https://smartdefine.org/on_the_qt/thesaurus/synonyms>.
MLASmart Define. "on the qt thesaurus" 24 May 2011. Web. 1 October 2026. <https://smartdefine.org/on_the_qt/thesaurus/synonyms>